/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Monitors call status changes from ETel

*

*/

#ifndef CSPETELCALLSTATUSMONITOR_H

#define CSPETELCALLSTATUSMONITOR_H

#include <e32base.h>

#include <etelmm.h>

class MCSPCallObserver;

NONSHARABLE_CLASS(CSPEtelCallStatusMonitor) : public CActive

    {

    public: //Constructors and descructor

        /**

        * Two-phased constructing for the monitor.

        * @param aObserver observer for call status changes

        * @param aCall actual object of the monitoring

        */

        static CSPEtelCallStatusMonitor* NewL( MCSPCallObserver& aObserver, 

                                               RMobileCall& aCall );

        /**

        * Destructor of the monitor which cancels ongoing monitoring.

        */

        virtual ~CSPEtelCallStatusMonitor( );

        /**

        * Start monitoring call events

        * @since S60 3.2

        */

        void StartMonitoring();

        /**

        * State of call.

        * @return ETel state

        */

        RMobileCall::TMobileCallStatus State();

    protected: // From CActive

        /**

        * From CActive

        * RunL

        * @since S60 3.2

        */

        void RunL();

        /**

        * From CActive

        * Cancels the monitor

        * @since S60 3.2

        */

        void DoCancel();

    private:

        /**

        * C++ constructor for the monitor.

        * @param aObserver observer for status changes

        * @param aCall actual object of the monitoring

        */

        CSPEtelCallStatusMonitor( MCSPCallObserver& aObserver, RMobileCall& aCall );

    private: // data

        /**

        * Observer for state changes.

        */

        MCSPCallObserver& iObserver;

        /**

        * ETel call which this monitors

        */

        RMobileCall& iCall;

        /**

        * Pointer for recovering from a situation where CCE releases call 

        * during observer-call sequence.

        */

        TBool* iDestrPtr;

    protected:

        /**

        * ETel call status

        */

        RMobileCall::TMobileCallStatus iCallStatus;

    };

#endif // CSPETELCALLSTATUSMONITOR_H